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0.88ct Diamond (Cushion, 5.58×5.58mm, White) vs 2.1ct Sapphire (Princess, 6.88×6.88mm, Dark Bluish Green)


Quick summary: When looked from above (face-up position), 2.1ct Sapphire (6.88×6.88mm, princess cut) appears 69% larger than 0.88ct Diamond (5.58×5.58mm, cushion cut). See below how they compare side-by-side on a ring and finger.

0.88ct Diamond (cushion cut)
vs
 2.1ct Sapphire (princess cut)
white
 
dark bluish green
5.58×5.58 mm 6.88×6.88 mm
actual size
Actual size of 0.88ct Diamond (cushion cut, 5.58×5.58mm, White color)   Actual size of 2.1ct Sapphire (princess cut, 6.88×6.88mm, Dark Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.88ct Diamond (cushion cut, 5.58×5.58mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Bluish Green 2.1ct Sapphire (princess cut, 6.88×6.88mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 34% vs 41%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.88ct Diamond Cushion (5.58×5.58mm, White) and 2.1ct Sapphire Princess (6.88×6.88mm, Dark Bluish Green) as they would appear on a ring and finger. Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Face-up Size

All things being equal, Sapphire will face-up smaller than Diamond for a given carat weight, because it has higher specific gravity (4 vs. 3.52 - this means it's "heavier" compared to Diamond of the same size). Face-up size also depends heavily on the proportions of the cut.

Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.


0.88 Ct Diamond (Cushion) 2.1 Ct Sapphire (Princess)
5.58×5.58 mm vs 6.88×6.88 mm
28.02 mm²   47.33 mm²
Face-up size outline for 2.1ct Sapphire (6.88×6.88mm, princess cut)
Face-up size outline for 0.88ct Diamond (5.58×5.58mm, cushion cut)
0.88ct Diamond Cushion (5.58×5.58mm)
2.1ct Sapphire Princess (6.88×6.88mm)
Difference: 69% (19.31 mm²)
2.1ct Sapphire (Princess, 6.88×6.88mm) has approx. 69% more face-up area than 0.88ct Diamond (Cushion, 5.58×5.58mm).


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